US11629521B2 - Sun tracking canopy structure for autonomous shade control - Google Patents
Sun tracking canopy structure for autonomous shade control Download PDFInfo
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- US11629521B2 US11629521B2 US17/318,916 US202117318916A US11629521B2 US 11629521 B2 US11629521 B2 US 11629521B2 US 202117318916 A US202117318916 A US 202117318916A US 11629521 B2 US11629521 B2 US 11629521B2
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- canopy
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
- E04H15/58—Closures; Awnings; Sunshades
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/02—Tents combined or specially associated with other devices
- E04H15/04—Tents combined or specially associated with other devices suspended type, e.g. from trees or from cantilever supports
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/32—Parts, components, construction details, accessories, interior equipment, specially adapted for tents, e.g. guy-line equipment, skirts, thresholds
- E04H15/34—Supporting means, e.g. frames
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/02—Tents combined or specially associated with other devices
- E04H15/10—Heating, lighting or ventilating
Definitions
- the present invention provides an embodiment that calculates sun azimuth and elevation coordinates to automatically adjust the position of a motorized canopy to provide a consistent and fixed shade on a desired location. This eliminates the need to manually displace umbrella or to move furniture in order to stay in shade during the day.
- the sun-tracking canopy of the present invention provides an autonomous shade over the entire year, protecting outdoor furniture against harmful UV radiation, rain, and snow.
- the embodiments of the present invention also provide a low-cost and elegant solution to many applications, including personal use (such as backyard setting, picnic and camping setting) or several commercial use (such as hotels, resorts, outdoor pool settings, restaurants and coffee shops with outdoor tables, and beach setting).
- personal use such as backyard setting, picnic and camping setting
- several commercial use such as hotels, resorts, outdoor pool settings, restaurants and coffee shops with outdoor tables, and beach setting.
- the present invention relates to the use of a canopy attached to motorized platforms controlled by a microcontroller or processor (e.g., Raspberry Pi or iOS) to provide a non-moving and static shade for consistent sun protection over specified area.
- a microcontroller or processor e.g., Raspberry Pi or iOS
- the microcontroller or processor uses the captured image from a camera to identify the location of the shade and position the canopy in real time for more accurate shade control without the need for computing the sun coordinates.
- the embodiments of the present invention also use a motorized canopy to automatically manage multiple designated areas for various conditions.
- the present invention provides automatic protection to areas during rain or snow using a rain sensor.
- the senor may be illuminated at night using attached light-weight LEDs which may be located under the canopy.
- the present invention provides on-demand protection to any outdoor area by remote communication with a microcontroller or processor.
- the present invention provides a sun tracking canopy structure, comprising: a canopy that is positioned by 3 or more cables attached to motorized platforms; a that calculates solar elevation and azimuth based on the latitude and longitude coordinates of the site to compute the canopy location and gives commands to the motorized platforms to maintain a fixed shade location on the designated areas.
- the present invention provides a sun tracking canopy structure wherein the number of motorized platforms depends on the number of corners of the canopy.
- the present invention provides a sun tracking canopy structure wherein the motorized platforms are mounted on dedicated poles or attached to a building structure or combination of both.
- the present invention provides a sun tracking canopy structure wherein the canopy is attached to the platforms by cables that are attached to self-limiting springs that are mounted to the canopy to dampen out weather effects and/or positioning errors.
- the present invention provides a sun tracking canopy structure wherein a rain sensor is connected to the microcontroller or processor to detect rain falls.
- the present invention provides a sun tracking canopy structure wherein the motorized platforms are placed at different elevations to provide enough slope to prevent standing water on the surface of a canopy.
- the present invention provides a sun tracking canopy structure wherein the microcontroller or processor reads the rain sensor and if rain is detected, it immediately moves the canopy over the designated area to protect it from the rain or snow.
- the present invention provides a sun tracking canopy structure wherein the canopy provides lighting on any desired area during the night, using light-weight LEDs attached under the canopy.
- the present invention provides a sun tracking canopy structure, wherein the is accessed remotely, for example by a phone app over Wi-Fi, to control the canopy location and/or set multiple designated areas for desired shades at any time on demand.
- the present invention provides a sun tracking canopy structure wherein a GPS chip is connected to the microcontroller or processor, to provide local time and the latitude and longitude of the location directly to the microcontroller or processor.
- the present invention provides a sun tracking canopy structure wherein the low-voltage power supply for the LEDs is delivered through the holding cables attached to the canopy.
- the present invention provides a sun tracking canopy structure wherein the microcontroller or processor uses an image captured from a camera to identify the location of the shade and position the canopy in real time for more accurate shade control without the need for computing the sun coordinates.
- FIG. 1 illustrates a first embodiment of the present invention shows a block diagram of the invented sun-tracking canopy that is positioned by 4 cables attached to motorized platforms that are manipulated by a microcontroller or processor in order to maintain a fixed shade on the designated area for an embodiment of the present invention.
- FIGS. 2 A and 2 B show an example of the sun-tracking canopy that provides shade on a fixed designated location, despite the movements of the sun during the day, by adjusting the canopy's position with the cables attached to the motorized platforms for an embodiment of the present invention.
- FIG. 3 shows an example of the sun-tracking canopy that is positioned at various designated areas on demand in real time for an embodiment of the present invention.
- FIG. 4 shows an example of the sun-tracking canopy that uses the rain sensor to automatically position itself on a specified designated area during rain or snow falls and how the slope of the canopy prevents any standing water on the surface of canopy for an embodiment of the present invention.
- FIG. 5 shows an example of the sun-tracking canopy that is positioned at a designated area at night to provide lighting, using light-weight LEDs attached under the canopy for an embodiment of the present invention that may have various canopy such as shapes.
- FIG. 6 shows another embodiment of this invention, wherein the motorized platforms are mounted on combination of dedicated poles and a building structure.
- various shapes for the canopy are also shown in this embodiment; rectangular canopy with 4 motorized platforms and triangular canopy with 3 motorized platforms.
- FIG. 7 shows a detailed motorized platform that may be used with the embodiments of the present invention.
- FIG. 8 shows how motorized platforms that may be used with the embodiments of the present invention may be mounted.
- FIG. 9 A is a top-view of a canopy positioned in nominal (e.g., center).
- FIG. 9 B is a top-view of a canopy positioned in a corner.
- FIG. 10 shows an example of calculated lengths of the cables (R 1 -R 4 ) as a function of canopy positions when it is moved horizontally.
- FIG. 11 shows an example of calculated lengths of the cables (R 1 -R 4 ) as a function of canopy positions when it is moved diagonally.
- FIG. 12 shows an example of calculated lengths of the cables (R 1 -R 4 ) as a function of canopy positions when it is moved within arbitrary trajectory.
- FIG. 13 shows a cable brake assembly for an embodiment of the present invention.
- FIG. 14 shows a bottom cable spooler assembly for an embodiment of the present invention.
- FIG. 15 shows a cable block guide assembly for an embodiment of the present invention.
- FIGS. 16 A, 16 B, and 16 C shows an assembly and method for positioning a canopy around an obstacle.
- FIG. 1 A block diagram of the invented sun-tracking canopy is illustrated in FIG. 1 , where the canopy 111 is attached by cables 121 A- 121 D to motorized platforms 131 A- 131 D. While a four-sided canopy is shown, other configurations may be used such as circular and triangular shapes as well.
- the motorized canopy is manipulated by a microcontroller or processor 151 in order to maintain a fixed shade area 141 on a designated area.
- a rain sensor 161 is used to automatically position the canopy on a specified area during rain or snow falls.
- the microcontroller or processor continues adjusting the canopy's position in real time, by computing the sun azimuth and elevation coordinates in a regular basis, for example once every 10 minutes.
- Several resources are readily available to calculate the sun coordinates as a function of the latitude and longitude of the site, day of year, and time that can be used in the presented invention.
- solar position calculations is available at the NOAA Earth System Research Laboratories (ESRL), located at the David Skaggs Research Center in Boulder, Colo. (https://www.esrl.noaa.gov). The detail calculations can be found at https://www.esrl.noaa.gov/gmd/grad/solcalc/solareqns.PDF.
- the microcontroller or processor uses the change in sun coordinates, to compute the change in canopy's position. Appropriate commands are sent to the motorized platform to move the canopy to adjust its position.
- motorized platforms 610 and 620 may be mounted on a building structure 630 while other motorized platforms such as 640 is mounted on vertical support 650 .
- the number of motorized platforms depends on the canopy's shape. For example, a rectangular canopy needs 4 motorized platforms, whereas a triangular canopy needs 3 motorized platforms.
- the canopy is attached to the platforms by steel cables that are attached to self-limiting springs 171 A- 171 D, as shown in FIG. 1 , that are mounted to the canopy.
- the self-limiting springs act to dampen out weather effects and positioning errors.
- cable 700 runs to motorized platform 710 through bearings 720 A and 720 B that control the incoming position of the cable to the cable spool as illustrated.
- Cable 700 is wrapped around cable spool 730 which may have grooves to receive cable 700 . The grooves aids in the friction between the cable and the cable spool.
- a spring-loaded tensioning roller parallel to the cable spool may also be used to reduce cable slack on the cable spool.
- Excess cable 765 is dropped through opening 750 in the platform plate 755 into a container 760 such as a PVC pipe where it self-winds.
- the cable spool is driven by a worm drive motor 770 .
- the worm drive motor may be further designed to maintain tension on the cable without being powered.
- the platform is covered by a weatherproof cover 790 .
- FIG. 8 shows an example of preferred mounting system 800 .
- Mounting system 800 may include vertical support 810 and foundation 820 .
- a rotation stage 830 can be placed under the motorized platform 840 , allowing the platform to rotate in any angle that the tension is creating. This approach will give full 360-degree angle freedom from the pole it is mounted to.
- the maximum length of the cables is calculated using the locations of the motorized platforms and the size of the canopy under extreme locations, for example as shown in FIG. 9 , where for the coverage are of 45′ by 45′ and canopy size of 12′ by 12′, the minimum and maximum length of cables are 0′ and 47′, respectively.
- each cable (R 1 -R 4 ) is calculated for any trajectory that the canopy needs to be moved. All calculations are performed by the microcontroller or processor.
- the sun azimuth and elevation are computed as 216.26° and 66.61°, respectively.
- the motorized platforms of this invention move the canopy 0.48′′ toward North and 8.28′′ toward West to maintain the shade at the same location it was at 2:00 PM.
- FIG. 2 A shows how canopy 200 is in a first position at 10:00 AM closer to motorized platforms 202 and 203 than motorized platforms 204 and 205 to shade area 210 .
- FIG. 2 B shows how canopy 200 has at 5:00 PM transitioned to a second position closer to motorized platforms 204 and 205 than motorized platforms 202 and 203 to continue to shade area 210 .
- a GPS chip can also be used to provide local time and the latitude and longitude of the location directly to the microcontroller or processor, eliminating the need for the user to provide any information during installation.
- the presented invention provides valuable opportunities to move the motorized canopy over multiple designated areas stored in the microcontroller or processor or on demand. As shown in FIG. 3 , canopy 3 is positioned to provide shade to area 310 . In addition, the microcontroller or processor can give the flexibility to move the canopy in any location such as area 320 by using a phone app over Wi-Fi.
- FIG. 4 shows an example of sun-tracking canopy 400 that uses rain sensor 420 to automatically position itself on a specified designated area 440 during rain or snow fall.
- canopy 450 may be sloped by the manipulation of cables 410 - 413 . For example, once edge 430 of canopy 400 is properly positioned, edge 450 can be lowered creating a slope by increasing the length of cables 412 and 413 , such as be a release of tension, while maintaining the lengths of cables 410 and 411 . Sloping the canopy as desired prevents any standing water on the surface of canopy for this embodiment of the present invention.
- FIGS. 9 A and 9 B shows two top-view examples of canopy positions in nominal (e.g., center) and extreme (e.g., one corner) locations to demonstrate the length of cables at various locations on how the cables must be able to move in an arc.
- canopy 900 is in a central position and cables 910 - 913 are all positioned inwardly towards the center of perimeter 950 defined by motorized platforms 920 - 923 .
- cables 920 and 922 need to change orientations and move to locations that are substantially parallel to the edges of perimeter 950 .
- microcontroller or processor can use a rain sensor to immediately and automatically move the motorized canopy over designated area 1 .
- microcontroller or processor 600 can compute the time of sunset, based on the sun position, and automatically have canopy 610 moved to a predetermined area to illuminate the area using light source 630 .
- Worm drive motor 770 is used to hold the cable at a set location without keeping power on the motor. However, when the canopy whipped around in high wind conditions, worm drive motor 770 would fail. To remedy this situation, brake assembly 1300 is provided. Assembly 1300 consist of brake rotor 1310 , brake disc 1320 , tension idler bearing 1330 , linear actuator 1340 and brake cable 1350 . Also provided are control electronics 1360 which operates the assembly. Control electronics 1360 is configured to apply the brake to keep the cable spool stationary when the canopy is not being adjusted.
- planetary gear motor 1400 and cable tensioner 140 are used to control the cable. As the cable is played in, the cable is being moved down the pole, the motor is running keeping tension on the cable. When it is being played out, the motor is off and the friction between the motor pulley and the spring tensioner keeps tension on the cable.
- cable block guide 1500 may be used with the embodiments of the present invention.
- Cable block guide 1500 consists of front set of grooved bearings which may be U bearings 1510 and 1511 defining a cable opening 1515 .
- a second of rear set of grooved bearings 1520 and 1521 may also be provided.
- spool 1540 and cable length counter 1550 are also shown in FIG. 15 .
- Counter 1550 tracks the turns of spool 1540 .
- the front set of U bearings allows the cable to play out if necessary, at nearly 90-degree angles from the pole.
- each one is aligned to the canopy starting location.
- the second set ensures the cable is aligned to the spool no matter the position of the cable on the front set of U bearings.
- tension idler bearing 1330 ensures the cable stays lined up on the spool.
- FIGS. 16 A- 16 C illustrate additional embodiment of the present invention that may be used to maneuver canopy 1605 when there are movement zones having obstacles 1600 (e.g., due to large trees, building structure, or non-rectangular coverage area).
- canopy 1605 can be controlled by one or more double-stranded connections points.
- connection point is one of corners.
- the connection points are spaced a short distance apart.
- FIG. 16 A shows obstacle 1600 , canopy 1605 and cables 1611 - 1615 .
- obstacle 1600 is within area or zone 1602 which is defined by cables 1611 and 1615 and their connection point 1610 which is a corner but may be one or more points along canopy 1605 .
- a double stranded corner may be comprised of cables 1611 , 1615 and corner 1610 . Cables 1611 - 1615 are used to position canopy 1605 when the canopy is in Zone 1 .
- FIG. 16 B shows that when the “double stranded corner” of the canopy is in Zone 2 , only cable 1615 is used to position the canopy. Cable 1611 is only pulled enough to keep it straight without putting any tension on the pulley.
- the microcontroller or processor uses the captured image from a camera to identify the location of the shade. With this information, the canopy may be positioned by the processor to shade a predetermined area.
- a processor calculates a first solar elevation and azimuth based on the latitude and longitude coordinates of the structure at a first period of time. Then, later in time, or at predetermined intervals, the processor calculates a second solar elevation and azimuth based on the latitude and longitude coordinates of the structure at a second period of time. The second solar elevation and azimuth is different than the first calculated solar elevation and azimuth as a result of the movement of the sun.
- the processor uses the first calculated solar elevation and azimuth and the second calculated solar elevation and azimuth to position the canopy in a location to shade the same predetermined area. This allows, for example, a table to remain in a shaded area throughout a given time period.
- positioning of the canopy is performed by having the processor work in conjunction with each motorized platform, to change a cable length, which may be the distance between the motorized platform and the canopy. During the course of positioning the canopy overtime, the length of each cable attached to the canopy will change.
Abstract
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US17/318,916 US11629521B2 (en) | 2020-05-12 | 2021-05-12 | Sun tracking canopy structure for autonomous shade control |
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US202063023455P | 2020-05-12 | 2020-05-12 | |
US17/318,916 US11629521B2 (en) | 2020-05-12 | 2021-05-12 | Sun tracking canopy structure for autonomous shade control |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4019396A1 (en) * | 1989-08-19 | 1991-05-02 | Liebchen Lars Gunnar | Awning for protecting sun-bather - is formed form sheet of transparent material mounted on rectangular frame |
US5339848A (en) * | 1994-01-18 | 1994-08-23 | Henry Richmond | Motorized sunshade |
US5622197A (en) * | 1994-03-09 | 1997-04-22 | Valaire; Trevor | Canopy |
US6827094B1 (en) * | 1999-03-17 | 2004-12-07 | Hugh William Bramwells | Shielding assembly |
US20040261953A1 (en) * | 2001-10-16 | 2004-12-30 | Hart Garry Randall | Sail shaped awnings |
US7407178B2 (en) * | 2003-01-09 | 2008-08-05 | Rashell Freedman | Automated canopy positioning system |
DE202013104660U1 (en) * | 2013-10-15 | 2013-11-12 | Kurt Stimpfl | awning |
US9528313B1 (en) * | 2015-09-30 | 2016-12-27 | Nathan Dhilan Arimilli | Non-intrusive, adaptive tracking and shading device |
US20170318919A1 (en) * | 2016-05-09 | 2017-11-09 | Shadecraft, LLC | Automated Intelligent Shading Objects and Computer-Readable Instructions for Interfacing With, Communicating With and Controlling a Shading Object |
-
2021
- 2021-05-12 US US17/318,916 patent/US11629521B2/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4019396A1 (en) * | 1989-08-19 | 1991-05-02 | Liebchen Lars Gunnar | Awning for protecting sun-bather - is formed form sheet of transparent material mounted on rectangular frame |
US5339848A (en) * | 1994-01-18 | 1994-08-23 | Henry Richmond | Motorized sunshade |
US5622197A (en) * | 1994-03-09 | 1997-04-22 | Valaire; Trevor | Canopy |
US6827094B1 (en) * | 1999-03-17 | 2004-12-07 | Hugh William Bramwells | Shielding assembly |
US20040261953A1 (en) * | 2001-10-16 | 2004-12-30 | Hart Garry Randall | Sail shaped awnings |
US7407178B2 (en) * | 2003-01-09 | 2008-08-05 | Rashell Freedman | Automated canopy positioning system |
DE202013104660U1 (en) * | 2013-10-15 | 2013-11-12 | Kurt Stimpfl | awning |
US9528313B1 (en) * | 2015-09-30 | 2016-12-27 | Nathan Dhilan Arimilli | Non-intrusive, adaptive tracking and shading device |
US20170318919A1 (en) * | 2016-05-09 | 2017-11-09 | Shadecraft, LLC | Automated Intelligent Shading Objects and Computer-Readable Instructions for Interfacing With, Communicating With and Controlling a Shading Object |
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US20210355704A1 (en) | 2021-11-18 |
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